diff --git a/include/boost/type_traits/alignment_traits.hpp b/include/boost/type_traits/alignment_traits.hpp
index b509f67..2289ac0 100644
--- a/include/boost/type_traits/alignment_traits.hpp
+++ b/include/boost/type_traits/alignment_traits.hpp
@@ -141,17 +141,17 @@ struct ct_if
         char, short, int, long, float, double, long double \
         , void*, function_ptr, member_ptr, member_function_ptr))
 
-#define BOOST_TT_CHOOSE_LOWER_ALIGNMENT(R,P,I,T) \
+#define BOOST_TT_CHOOSE_MIN_ALIGNMENT(R,P,I,T) \
         typename ct_if< \
            alignment_of<T>::value <= target, T, char>::type BOOST_PP_CAT(t,I);
 
 #define BOOST_TT_CHOOSE_T(R,P,I,T) T BOOST_PP_CAT(t,I);
            
 template <std::size_t target>
-union lower_alignment
+union min_alignment
 {
   BOOST_PP_LIST_FOR_EACH_I(
-      BOOST_TT_CHOOSE_LOWER_ALIGNMENT
+      BOOST_TT_CHOOSE_MIN_ALIGNMENT
       , ignored, BOOST_TT_ALIGNMENT_TYPES)
 };
 
@@ -163,7 +163,7 @@ union max_align
 };
 
 #undef BOOST_TT_ALIGNMENT_TYPES
-#undef BOOST_TT_CHOOSE_LOWER_ALIGNMENT
+#undef BOOST_TT_CHOOSE_MIN_ALIGNMENT
 #undef BOOST_TT_CHOOSE_T
 
 template<int TAlign, int Align>
@@ -180,7 +180,7 @@ struct is_aligned
 template <int Align>
 class type_with_alignment
 {
-  typedef detail::lower_alignment<Align> t1;
+  typedef detail::min_alignment<Align> t1;
 
   typedef type_with_alignment<Align> this_type;